<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1030993
-->
<head>
  <meta charset="utf-8">
  <title>Test for Bug 1030993</title>
  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  <style>
  #display {
    background: blue; height: 10px; width: 0; color: black;
    transition: width linear 1s, color linear 1s;
  }
  </style>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1030993">Mozilla Bug 1030993</a>
<p id="display"></p>
<pre id="test">
</pre>
<script type="application/javascript">

/** Test for Bug 1030993 **/

function advance_clock(milliseconds) {
  SpecialPowers.DOMWindowUtils.advanceTimeAndRefresh(milliseconds);
}

var p = document.getElementById("display");
var cs = getComputedStyle(p, "");
advance_clock(0);
cs.width; // flush
p.style.width = "1000px"; // initiate transition
is(cs.width, "0px", "transition at 0ms"); // flush (and test)
advance_clock(100);
is(cs.width, "100px", "transition at 100ms"); // flush
// restyle *and* trigger new transitions
p.style.color = "blue";
// flush again, at the same timestamp
is(cs.width, "100px", "transition at 100ms, after restyle");

SpecialPowers.DOMWindowUtils.restoreNormalRefresh();

</script>
</body>
</html>
